I like this ui alot and i used it before without any problems. but now when i installed it my fps went from solid 60fps to like 5..

would be good to know which module in UI raising lags... if you can check - that's will really help me

I was running aorund in stormwind for an hour or two, setting up the UI, and I ran into this as well. But it's only while in instances and battlegrounds. I've got 60-ish fps while running solo, but it dropped till like 0,2 fps when I tried to do a heroic.
Is there any simple way to see what module is causing the lag?

How do you get rid of the class icons?
I've tried to use the "/SC UI" menu, and I found a check-box there for it, but it doesn't seem to do anything when I click "save".

Got any suggestions?

And I'm not able to disable names above friendly NPC's. If I disable them in the interface menu, the custom name layout is disabled, and the normal blizzard ones are enabled instead. There's no way to turn off both as far as I can see.

i should to rewrite or delete nameplates module. just switch off it in settings

How do you get rid of the class icons?
I've tried to use the "/SC UI" menu, and I found a check-box there for it, but it doesn't seem to do anything when I click "save".

Got any suggestions?

And I'm not able to disable names above friendly NPC's. If I disable them in the interface menu, the custom name layout is disabled, and the normal blizzard ones are enabled instead. There's no way to turn off both as far as I can see.